java.lang.NullPointerException: Unexpected error at net.minecraft.world.chunk.storage.ExtendedBlockStorage.func_150818_a(ExtendedBlockStorage.java:86) at net.minecraft.world.chunk.Chunk.func_150807_a(Chunk.java:653) at net.minecraft.world.World.setBlock(World.java:519) at net.minecraft.world.World.setBlock(World.java:681) at net.minecraft.item.ItemSeeds.onItemUse(ItemSeeds.java:41) at net.minecraft.item.ItemStack.tryPlaceItemIntoWorld(ItemStack.java:143) at net.minecraft.client.multiplayer.PlayerControllerMP.onPlayerRightClick(PlayerControllerMP.java:403) at net.minecraft.client.Minecraft.func_147121_ag(Minecraft.java:1529) at net.minecraft.client.Minecraft.runTick(Minecraft.java:2044) at net.minecraft.client.Minecraft.runGameLoop(Minecraft.java:1039) at net.minecraft.client.Minecraft.run(Minecraft.java:962) at net.minecraft.client.main.Main.main(Main.java:164) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at net.minecraft.launchwrapper.Launch.launch(Launch.java:135) at net.minecraft.launchwrapper.Launch.main(Launch.java:28) at net.minecraftforge.gradle.GradleStartCommon.launch(Unknown Source) at GradleStart.main(Unknown Source)

A detailed walkthrough of the error, its code path and all known details is as follows:---------------------------------------------------------------------------------------

-- Head --Stacktrace: at net.minecraft.world.chunk.storage.ExtendedBlockStorage.func_150818_a(ExtendedBlockStorage.java:86) at net.minecraft.world.chunk.Chunk.func_150807_a(Chunk.java:653) at net.minecraft.world.World.setBlock(World.java:519) at net.minecraft.world.World.setBlock(World.java:681) at net.minecraft.item.ItemSeeds.onItemUse(ItemSeeds.java:41) at net.minecraft.item.ItemStack.tryPlaceItemIntoWorld(ItemStack.java:143) at net.minecraft.client.multiplayer.PlayerControllerMP.onPlayerRightClick(PlayerControllerMP.java:403) at net.minecraft.client.Minecraft.func_147121_ag(Minecraft.java:1529)